Institute for Gravitation and the Cosmos | Tristan Weaver

Tristan Weaver - Graduate Researcher - Graduate Student

Office: 115 Davey Laboratory

Address: 296 Pollock Rd, State College PA 18602

Email: tsw5383@psu.edu

Phone: 9494688381

I am a graduate researcher working in the Jeong Cosmology Group and Radice Numerical Relativity Group. My research interests include cosmology, gravity, large scale structure, and the early universe. I am working on using AthenaK to simulate stimulated emission of gravitational waves in primordial black hole (PBH) binaries to constrain PBHs as a dark matter candidate. I am currently a Stephen B. Brumbach and Verne M. Willaman Distinguished Graduate Fellow. My previous research includes X-ray analysis of AGN Obscuration with the Urry Group at Yale and machine learning classification of galaxy environments with the Nagai Group at Yale and the Aragón-Salamanca Group at the University of Nottingham.

Click here to view my website

Publications

Tristan Weaver, Han Aung, Daniel Cornwell, Daisuke Nagai, Alfonso Aragón-Salamanca, "Reconstructing Filaments around Galaxy Clusters from Spectroscopic Surveys using Machine Learning." Research Notes of the American Astronomical Society 7 12 (2023)

The IGC wordmark was created by Monica Rincon Ramirez, while she was a graduate student at the Institute for Gravitation and the Cosmos (IGC). Monica enjoys drawing new connections between fundamental theory and observations. Her graduate work includes specialized topics in general relativity, loop quantum gravity, and quantum fields in cosmological backgrounds. In particular, her thesis work focused on finding effective quantum corrections to gravitational phenomena from spinfoams, and applications to cosmology. She received her PhD in 2024.

The wordmark symbolizes the scope and variety of research at the IGC. The base of the image represents quantum gravity, evoking the quantum geometrical picture from spinfoams and loop quantum gravity. These are among the approaches to fundamental questions studied at the Center for Fundamental Theory. The middle of the image represents the Center for Theoretical and Observational Cosmology by galaxies embedded in a smooth surface, characteristic of spacetime in general relativity and the much larger physical scales studied in cosmology. Finally, at the top, the surface curves to an extreme, representing a supermassive black hole accompanied by an energetic jet. These elements depict an active galactic nucleus, inspired by Centaurus A. Just to the right, a pair of black holes approaches merger. This top portion of the wordmark represents the Center for Multimessenger Astrophysics, which specializes in the study of high-energy phenomena in the universe.